Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4

During which month do people sleep the least?

what does this below rebus represent identXQQQQQME

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Rearrange the letters in "new door" to make one word.

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

What word begins and ends with an E, but has only one letter?